likwid: Fix hash for 4.3.0 (#6307)
likwid: Fix hash for 4.3.0 (#6307)

Prefer 4.2.1 for now because 4.3.0's hash changes regularly.
tmerrick1/spack,mfherbst/spack,mfherbst/spack,matthiasdiener/spack,iulian787/spack,krafczyk/spack,iulian787/spack,tmerrick1/spack,tmerrick1/spack,matthiasdiener/spack,matthiasdiener/spack,LLNL/spack,tmerrick1/spack,mfherbst/spack,EmreAtes/spack,LLNL/spack,iulian787/spack,krafczyk/spack,LLNL/spack,krafczyk/spack,tmerrick1/spack,EmreAtes/spack,mfherbst/spack,EmreAtes/spack,mfherbst/spack,EmreAtes/spack,EmreAtes/spack,matthiasdiener/spack,LLNL/spack,matthiasdiener/spack,LLNL/spack,krafczyk/spack,iulian787/spack,iulian787/spack,krafczyk/spack